Hello everyone im new in this forum so im still trying to figure out how to work the website lol. But i need help i e been in this hobby for about a year now. I didnt kno much about testing the water or nothing like that but my fish r doint fine . I recently got into putting corrals but they i lost couple of them now, so i met this guy who showed me how to test the water n little by little helping me.lasg week i lost my jasmin polips i keep geeting brown algea my corals havent grown *** the guy said it would i dount kno wat im doing wrong i have a24 gal i been having coral for like 2 months now my water test is ph 8.2 amonia 0,nitrite 0, and nitrate 10 i just did a water change like 3. Weeks ago my nitrates was at 140i. Believe i dount have a skimmer does that make a difference on growing corals ?